<number id="waves" type="slider" arg="-waves %"
_label="Complexity" _low-label="Low" _high-label="High"
low="1" high="100" default="15"/>
<number id="ncolors" type="slider" arg="-colors %"
<number id="waves" type="slider" arg="-waves %"
_label="Complexity" _low-label="Low" _high-label="High"
low="1" high="100" default="15"/>
<number id="ncolors" type="slider" arg="-colors %"